# JAX Unisonic (Audio Unit) vs Seyfert

The clearest difference is review sentiment: Seyfert at 100% against JAX Unisonic (Audio Unit)'s 44%. Seyfert also leads on rating (5.0 vs 3.9) and price ($1.99 vs $9.99). JAX Unisonic (Audio Unit)'s advantage is ratings volume (9 vs 3) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

JAX Unisonic (Audio Unit) costs $9.99 and Seyfert $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Seyfert holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews point the same way: 44% of JAX Unisonic (Audio Unit)'s written reviews are positive against 100% of Seyfert's.

JAX Unisonic (Audio Unit) ships an update every 5 days, Seyfert every 2 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | JAX Unisonic (Audio Unit) | Seyfert |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/jax-unisonic-audio-unit/id1492522141/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/seyfert/id6794878287/reviews)** |
| Number of ratings | **9** | 3 |
| Positive reviews | 44.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#190** |
| Size | 40 MB | 3 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [Konstantin Torsten Schutz](https://appshunter.io/developer/6778600016) |

## What reviewers say

### JAX Unisonic (Audio Unit)

[App page](https://appshunter.io/ios/app/jax-unisonic-audio-unit/id1492522141)

This audio unit generates up to 8 additional voices from any audio input by multiplying and shifting pitch. It simulates analog synthesizer unison effects for fattening sounds and adding presence, with individual voice transposition capabilities.

**Highlights:** Generates up to 8 additional voices, Multiplies and shifts audio input pitch, Simulates analog synthesizer unison effects, Individual voice transposition (+/- 1 octave), Time domain pitch shifting (low latency), Panorama spread for voices

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Seyfert

[App page](https://appshunter.io/ios/app/seyfert/id6794878287)

**Currently charting:** #190 Top Paid · Music (US App Store)

This music effect plugin creates unique echoes that orbit and revolve around the listener. It offers advanced control over pitch, depth, and tone for each echo, with a built-in reverb and EQ for a rich soundscape. It functions as a standalone app or an Audio Unit for music production software.

**Highlights:** Orbital echo generation, Spin and Doppler pitch-bend effects, 3D binaural imaging, Octave shimmer and transpose, Per-echo tone and drive, Echo-focused reverb and EQ, Standalone and AUv3 support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JAX Unisonic (Audio Unit) free?

JAX Unisonic (Audio Unit) costs $9.99, with no in-app purchases.

### Is Seyfert free?

Seyfert costs $1.99, with no in-app purchases.

### Which has better reviews, JAX Unisonic (Audio Unit) or Seyfert?

Seyfert is rated higher. JAX Unisonic (Audio Unit) averages 3.9 out of 5 from 9 ratings, while Seyfert averages 5.0 from 3 ratings.

### Do JAX Unisonic (Audio Unit) or Seyfert have ads?

Neither JAX Unisonic (Audio Unit) nor Seyfert shows ads.

### Which is updated more often, JAX Unisonic (Audio Unit) or Seyfert?

JAX Unisonic (Audio Unit) ships an update every 5 days, and Seyfert every 2 days. Most recently, JAX Unisonic (Audio Unit) was updated on November 3, 2026 and Seyfert on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*